<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<!--NewPage-->
<HTML>
<HEAD>
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
<TITLE>
Functions (Guava: Google Core Libraries for Java - r08)
</TITLE>


<LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style">

<SCRIPT type="text/javascript">
function windowTitle()
{
    if (location.href.indexOf('is-external=true') == -1) {
        parent.document.title="Functions (Guava: Google Core Libraries for Java - r08)";
    }
}
</SCRIPT>
<NOSCRIPT>
</NOSCRIPT>

</HEAD>

<BODY BGCOLOR="white" onload="windowTitle();">
<HR>


<!-- ========= START OF TOP NAVBAR ======= -->
<A NAME="navbar_top"><!-- --></A>
<A HREF="#skip-navbar_top" title="Skip navigation links"></A>
<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY="">
<TR>
<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1">
<A NAME="navbar_top_firstrow"><!-- --></A>
<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY="">
  <TR ALIGN="center" VALIGN="top">
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> &nbsp;<FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A>&nbsp;</TD>
  </TR>
</TABLE>
</TD>
<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM>
</EM>
</TD>
</TR>

<TR>
<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
&nbsp;<A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base"><B>PREV CLASS</B></A>&nbsp;
&nbsp;<A HREF="../../../../com/google/common/base/Joiner.html" title="class in com.google.common.base"><B>NEXT CLASS</B></A></FONT></TD>
<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
  <A HREF="../../../../index.html?com/google/common/base/Functions.html" target="_top"><B>FRAMES</B></A>  &nbsp;
&nbsp;<A HREF="Functions.html" target="_top"><B>NO FRAMES</B></A>  &nbsp;
&nbsp;<SCRIPT type="text/javascript">
  <!--
  if(window==top) {
    document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>');
  }
  //-->
</SCRIPT>
<NOSCRIPT>
  <A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>
</NOSCRIPT>


</FONT></TD>
</TR>
<TR>
<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
  SUMMARY:&nbsp;NESTED&nbsp;|&nbsp;FIELD&nbsp;|&nbsp;CONSTR&nbsp;|&nbsp;<A HREF="#method_summary">METHOD</A></FONT></TD>
<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
DETAIL:&nbsp;FIELD&nbsp;|&nbsp;CONSTR&nbsp;|&nbsp;<A HREF="#method_detail">METHOD</A></FONT></TD>
</TR>
</TABLE>
<A NAME="skip-navbar_top"></A>
<!-- ========= END OF TOP NAVBAR ========= -->

<HR>
<!-- ======== START OF CLASS DATA ======== -->
<H2>
<FONT SIZE="-1">
com.google.common.base</FONT>
<BR>
Class Functions</H2>
<PRE>
<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
  <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>com.google.common.base.Functions</B>
</PRE>
<HR>
<DL>
<DT><PRE><FONT SIZE="-1"><A HREF="../../../../com/google/common/annotations/GwtCompatible.html" title="annotation in com.google.common.annotations">@GwtCompatible</A>
</FONT>public final class <B>Functions</B><DT>extends <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></DL>
</PRE>

<P>
Static utility methods pertaining to <code>Function</code> instances.

 <p>All methods returns serializable functions as long as they're given serializable parameters.
<P>

<P>
<DL>
<DT><B>Since:</B></DT>
  <DD>2 (imported from Google Collections Library)</DD>
<DT><B>Author:</B></DT>
  <DD>Mike Bostock, Jared Levy</DD>
</DL>
<HR>

<P>

<!-- ========== METHOD SUMMARY =========== -->

<A NAME="method_summary"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
<B>Method Summary</B></FONT></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static
<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" SUMMARY="">
<TR ALIGN="right" VALIGN="">
<TD NOWRAP><FONT SIZE="-1">
<CODE>&lt;A,B,C&gt; <A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base">Function</A>&lt;A,C&gt;</CODE></FONT></TD>
</TR>
</TABLE>
</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/google/common/base/Functions.html#compose(com.google.common.base.Function, com.google.common.base.Function)">compose</A></B>(<A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base">Function</A>&lt;B,C&gt;&nbsp;g,
        <A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base">Function</A>&lt;A,? extends B&gt;&nbsp;f)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the composition of two functions.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static
<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" SUMMARY="">
<TR ALIGN="right" VALIGN="">
<TD NOWRAP><FONT SIZE="-1">
<CODE>&lt;E&gt; <A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base">Function</A>&lt;<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>,E&gt;</CODE></FONT></TD>
</TR>
</TABLE>
</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/google/common/base/Functions.html#constant(E)">constant</A></B>(E&nbsp;value)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Creates a function that returns <code>value</code> for any input.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static
<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" SUMMARY="">
<TR ALIGN="right" VALIGN="">
<TD NOWRAP><FONT SIZE="-1">
<CODE>&lt;K,V&gt; <A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base">Function</A>&lt;K,V&gt;</CODE></FONT></TD>
</TR>
</TABLE>
</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/google/common/base/Functions.html#forMap(java.util.Map, V)">forMap</A></B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</A>&lt;K,? extends V&gt;&nbsp;map,
       V&nbsp;defaultValue)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a function which performs a map lookup with a default value.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static
<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" SUMMARY="">
<TR ALIGN="right" VALIGN="">
<TD NOWRAP><FONT SIZE="-1">
<CODE>&lt;K,V&gt; <A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base">Function</A>&lt;K,V&gt;</CODE></FONT></TD>
</TR>
</TABLE>
</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/google/common/base/Functions.html#forMap(java.util.Map)">forMap</A></B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</A>&lt;K,V&gt;&nbsp;map)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a function which performs a map lookup.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static
<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" SUMMARY="">
<TR ALIGN="right" VALIGN="">
<TD NOWRAP><FONT SIZE="-1">
<CODE>&lt;T&gt; <A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base">Function</A>&lt;T,<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</A>&gt;</CODE></FONT></TD>
</TR>
</TABLE>
</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/google/common/base/Functions.html#forPredicate(com.google.common.base.Predicate)">forPredicate</A></B>(<A HREF="../../../../com/google/common/base/Predicate.html" title="interface in com.google.common.base">Predicate</A>&lt;T&gt;&nbsp;predicate)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Creates a function that returns the same boolean output as the given predicate for all inputs.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static
<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" SUMMARY="">
<TR ALIGN="right" VALIGN="">
<TD NOWRAP><FONT SIZE="-1">
<CODE>&lt;E&gt; <A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base">Function</A>&lt;E,E&gt;</CODE></FONT></TD>
</TR>
</TABLE>
</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/google/common/base/Functions.html#identity()">identity</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the identity function.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base">Function</A>&lt;<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>,<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&gt;</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/google/common/base/Functions.html#toStringFunction()">toStringFunction</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a function that calls <code>toString()</code> on its argument.</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
</TR>
</TABLE>
&nbsp;
<P>

<!-- ============ METHOD DETAIL ========== -->

<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>Method Detail</B></FONT></TH>
</TR>
</TABLE>

<A NAME="toStringFunction()"><!-- --></A><H3>
toStringFunction</H3>
<PRE>
public static <A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base">Function</A>&lt;<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>,<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&gt; <B>toStringFunction</B>()</PRE>
<DL>
<DD>Returns a function that calls <code>toString()</code> on its argument. The function does not accept
 nulls; it will throw a <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang"><CODE>NullPointerException</CODE></A> when applied to <code>null</code>.

 <p><b>Warning:</b> The returned function may not be <i>consistent with equals</i> (as
 documented at <A HREF="../../../../com/google/common/base/Function.html#apply(F)"><CODE>Function.apply(F)</CODE></A>). For example, this function yields different results for
 the two equal instances <code>ImmutableSet.of(1, 2)</code> and <code>ImmutableSet.of(2, 1)</code>.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="identity()"><!-- --></A><H3>
identity</H3>
<PRE>
public static &lt;E&gt; <A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base">Function</A>&lt;E,E&gt; <B>identity</B>()</PRE>
<DL>
<DD>Returns the identity function.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="forMap(java.util.Map)"><!-- --></A><H3>
forMap</H3>
<PRE>
public static &lt;K,V&gt; <A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base">Function</A>&lt;K,V&gt; <B>forMap</B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</A>&lt;K,V&gt;&nbsp;map)</PRE>
<DL>
<DD>Returns a function which performs a map lookup. The returned function throws an <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang"><CODE>IllegalArgumentException</CODE></A> if given a key that does not exist in the map.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="forMap(java.util.Map,java.lang.Object)"><!-- --></A><A NAME="forMap(java.util.Map, V)"><!-- --></A><H3>
forMap</H3>
<PRE>
public static &lt;K,V&gt; <A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base">Function</A>&lt;K,V&gt; <B>forMap</B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</A>&lt;K,? extends V&gt;&nbsp;map,
                                         <FONT SIZE="-1"><A HREF="http://jsr-305.googlecode.com/svn/trunk/javadoc/javax/annotation/Nullable.html?is-external=true" title="class or interface in javax.annotation">@Nullable</A></FONT>
                                         V&nbsp;defaultValue)</PRE>
<DL>
<DD>Returns a function which performs a map lookup with a default value. The function created by
 this method returns <code>defaultValue</code> for all inputs that do not belong to the map's key
 set.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>map</CODE> - source map that determines the function behavior<DD><CODE>defaultValue</CODE> - the value to return for inputs that aren't map keys
<DT><B>Returns:</B><DD>function that returns <code>map.get(a)</code> when <code>a</code> is a key, or <code>defaultValue</code> otherwise</DL>
</DD>
</DL>
<HR>

<A NAME="compose(com.google.common.base.Function, com.google.common.base.Function)"><!-- --></A><H3>
compose</H3>
<PRE>
public static &lt;A,B,C&gt; <A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base">Function</A>&lt;A,C&gt; <B>compose</B>(<A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base">Function</A>&lt;B,C&gt;&nbsp;g,
                                            <A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base">Function</A>&lt;A,? extends B&gt;&nbsp;f)</PRE>
<DL>
<DD>Returns the composition of two functions. For <code>f: A-&gt;B</code> and <code>g: B-&gt;C</code>, composition
 is defined as the function h such that <code>h(a) == g(f(a))</code> for each <code>a</code>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>g</CODE> - the second function to apply<DD><CODE>f</CODE> - the first function to apply
<DT><B>Returns:</B><DD>the composition of <code>f</code> and <code>g</code><DT><B>See Also:</B><DD><a href="//en.wikipedia.org/wiki/Function_composition">function composition</a></DL>
</DD>
</DL>
<HR>

<A NAME="forPredicate(com.google.common.base.Predicate)"><!-- --></A><H3>
forPredicate</H3>
<PRE>
public static &lt;T&gt; <A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base">Function</A>&lt;T,<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</A>&gt; <B>forPredicate</B>(<A HREF="../../../../com/google/common/base/Predicate.html" title="interface in com.google.common.base">Predicate</A>&lt;T&gt;&nbsp;predicate)</PRE>
<DL>
<DD>Creates a function that returns the same boolean output as the given predicate for all inputs.

 <p>The returned function is <i>consistent with equals</i> (as documented at <A HREF="../../../../com/google/common/base/Function.html#apply(F)"><CODE>Function.apply(F)</CODE></A>) if and only if <code>predicate</code> is itself consistent with equals.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="constant(java.lang.Object)"><!-- --></A><A NAME="constant(E)"><!-- --></A><H3>
constant</H3>
<PRE>
public static &lt;E&gt; <A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base">Function</A>&lt;<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>,E&gt; <B>constant</B>(<FONT SIZE="-1"><A HREF="http://jsr-305.googlecode.com/svn/trunk/javadoc/javax/annotation/Nullable.html?is-external=true" title="class or interface in javax.annotation">@Nullable</A></FONT>
                                              E&nbsp;value)</PRE>
<DL>
<DD>Creates a function that returns <code>value</code> for any input.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - the constant value for the function to return
<DT><B>Returns:</B><DD>a function that always returns <code>value</code></DL>
</DD>
</DL>
<!-- ========= END OF CLASS DATA ========= -->
<HR>


<!-- ======= START OF BOTTOM NAVBAR ====== -->
<A NAME="navbar_bottom"><!-- --></A>
<A HREF="#skip-navbar_bottom" title="Skip navigation links"></A>
<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY="">
<TR>
<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1">
<A NAME="navbar_bottom_firstrow"><!-- --></A>
<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY="">
  <TR ALIGN="center" VALIGN="top">
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> &nbsp;<FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A>&nbsp;</TD>
  </TR>
</TABLE>
</TD>
<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM>
</EM>
</TD>
</TR>

<TR>
<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
&nbsp;<A HREF="../../../../com/google/common/base/Function.html" title="interface in com.google.common.base"><B>PREV CLASS</B></A>&nbsp;
&nbsp;<A HREF="../../../../com/google/common/base/Joiner.html" title="class in com.google.common.base"><B>NEXT CLASS</B></A></FONT></TD>
<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
  <A HREF="../../../../index.html?com/google/common/base/Functions.html" target="_top"><B>FRAMES</B></A>  &nbsp;
&nbsp;<A HREF="Functions.html" target="_top"><B>NO FRAMES</B></A>  &nbsp;
&nbsp;<SCRIPT type="text/javascript">
  <!--
  if(window==top) {
    document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>');
  }
  //-->
</SCRIPT>
<NOSCRIPT>
  <A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>
</NOSCRIPT>


</FONT></TD>
</TR>
<TR>
<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
  SUMMARY:&nbsp;NESTED&nbsp;|&nbsp;FIELD&nbsp;|&nbsp;CONSTR&nbsp;|&nbsp;<A HREF="#method_summary">METHOD</A></FONT></TD>
<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
DETAIL:&nbsp;FIELD&nbsp;|&nbsp;CONSTR&nbsp;|&nbsp;<A HREF="#method_detail">METHOD</A></FONT></TD>
</TR>
</TABLE>
<A NAME="skip-navbar_bottom"></A>
<!-- ======== END OF BOTTOM NAVBAR ======= -->

<HR>

</BODY>
</HTML>
